I think adding teams that far away will hurt the ACC. Super long road trips are very taxing on teams. It is going to hurt the B1G.
That said, the pro towards adding teams is that there are quality programs available now and if the goal is to end up with say 16 quality programs, and you think it is inevitable that you are going to lose 2 or 3 programs down the road, it makes sense to bring in the best replacements possible now, while they are still available.
I think if the ACC does expand now, it is because they have come to the conclusion they are definitely losing a few programs down the road.